/* === S Y N F I G ========================================================= */
-/*! \file layer_solidcolor.cpp
+/*! \file mod_gradient/radialgradient.cpp
** \brief Template Header
**
-** $Id: radialgradient.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
+** $Id$
**
** \legal
-** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
-** This software and associated documentation
-** are CONFIDENTIAL and PROPRIETARY property of
-** the above-mentioned copyright holder.
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
**
-** You may not copy, print, publish, or in any
-** other way distribute this software without
-** a prior written agreement with
-** the copyright holder.
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
** \endlegal
*/
/* ========================================================================= */
SYNFIG_LAYER_SET_LOCAL_NAME(RadialGradient,_("Radial Gradient"));
SYNFIG_LAYER_SET_CATEGORY(RadialGradient,_("Gradients"));
SYNFIG_LAYER_SET_VERSION(RadialGradient,"0.1");
-SYNFIG_LAYER_SET_CVS_ID(RadialGradient,"$Id: radialgradient.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
+SYNFIG_LAYER_SET_CVS_ID(RadialGradient,"$Id$");
/* === P R O C E D U R E S ================================================= */
zigzag(false)
{
}
-
+
bool
RadialGradient::set_param(const String & param, const ValueBase &value)
{
IMPORT(radius);
IMPORT(loop);
IMPORT(zigzag);
-
+
return Layer_Composite::set_param(param,value);
}
EXPORT(radius);
EXPORT(loop);
EXPORT(zigzag);
-
+
EXPORT_NAME();
EXPORT_VERSION();
-
- return Layer_Composite::get_param(param);
+
+ return Layer_Composite::get_param(param);
}
Layer::Vocab
RadialGradient::get_param_vocab()const
{
Layer::Vocab ret(Layer_Composite::get_param_vocab());
-
+
ret.push_back(ParamDesc("gradient")
.set_local_name(_("Gradient"))
);
ret.push_back(ParamDesc("center")
.set_local_name(_("Center"))
);
-
+
ret.push_back(ParamDesc("radius")
.set_local_name(_("Radius"))
.set_description(_("This is the radius of the circle"))
);
ret.push_back(ParamDesc("zigzag")
- .set_local_name(_("Zig-Zag"))
+ .set_local_name(_("ZigZag"))
);
-
+
return ret;
}
RadialGradient::color_func(const Point &point, float supersample)const
{
Real dist((point-center).mag()/radius);
-
+
if(zigzag)
{
dist*=2.0;
if(dist+supersample*0.5>1.0)
{
- Color pool(gradient(dist,supersample*0.5).premult_alpha()*(1.0-(dist-supersample*0.5)));
- pool+=gradient((dist+supersample*0.5)-1.0,supersample*0.5).premult_alpha()*((dist+supersample*0.5)-1.0);
+ float left(supersample*0.5-(dist-1.0));
+ float right(supersample*0.5+(dist-1.0));
+ Color pool(gradient(1.0-(left*0.5),left).premult_alpha()*left/supersample);
+ if (zigzag) pool+=gradient(1.0-right*0.5,right).premult_alpha()*right/supersample;
+ else pool+=gradient(right*0.5,right).premult_alpha()*right/supersample;
return pool.demult_alpha();
}
if(dist-supersample*0.5<0.0)
{
- Color pool(gradient(dist,supersample*0.5).premult_alpha()*(dist+supersample*0.5));
- pool+=gradient(1.0-(dist-supersample*0.5),supersample*0.5).premult_alpha()*(-(dist-supersample*0.5));
+ float left(supersample*0.5-dist);
+ float right(supersample*0.5+dist);
+ Color pool(gradient(right*0.5,right).premult_alpha()*right/supersample);
+ if (zigzag) pool+=gradient(left*0.5,left).premult_alpha()*left/supersample;
+ else pool+=gradient(1.0-left*0.5,left).premult_alpha()*left/supersample;
return pool.demult_alpha();
}
}
-
+
return gradient(dist,supersample);
}
float
-RadialGradient::calc_supersample(const synfig::Point &x, float pw,float ph)const
+RadialGradient::calc_supersample(const synfig::Point &/*x*/, float pw,float /*ph*/)const
{
// return sqrt(pw*pw+ph*ph)/radius;
return 1.2*pw/radius;
else
return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
}
-
+
bool
RadialGradient::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
return true;
}
-
+
int x,y;
Surface::pen pen(surface->begin());
Point tl(renddesc.get_tl());
const int w(surface->get_w());
const int h(surface->get_h());
-
+
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
for(y=0,pos[1]=tl[1];y<h;y++,pen.inc_y(),pen.dec_x(x),pos[1]+=ph)